International airports, regional fields and GA aerodromes — the places every mission starts and ends.

| Company | Type | Location | Codes |
|---|---|---|---|
| Old Airstrip | aerodrome | Philippines | — |
| Old Airstrip | aerodrome | Tanzania | — |
| Old Andado Airstrip | aerodrome | Australia | — |
| Old Auberry Airport | aerodrome | United States | — |
| Old Bacolod Airport | aerodrome | Bacolod City, Philippines | — |
| Old Bar Heritage Airstrip | aerodrome | Australia | — |
| Old Boston Airfield | aerodrome | Williamsburg, United States | — |
| Old Bridge Airport | aerodrome | United States | — |
| Old Buckenham Airfield | aerodrome | United Kingdom | ICAO EGSV |
| Oldbury on Severn Airstrip | private airstrip | United Kingdom | — |
| Old Chiang Rai Airport | military airfield | Thailand | ICAO VTCR |
| Old Colville Lake Airport |
aerodrome 30,878international 8,351military airfield 1,867private airstrip 1,800heliport 555regional 460
United States 15,232Brazil 2,982Australia 2,025Canada 1,765France 1,355Russia 1,265United Kingdom 1,109South Africa 938Germany 879Colombia 835Italy 718Indonesia 681Argentina 621Ukraine 570Papua New Guinea 536China 489Mexico 478Venezuela 468Spain 414India 411Namibia 376Chile 358Congo - Kinshasa 356South Sudan 331Poland 327Czechia 277New Zealand 250Kenya 242Sweden 222Japan 195Philippines 188Norway 179Botswana 151Portugal
Operators claiming an entry can correct facts, add services and certificates, and mark their page verified. Claiming is free — see a company’s page for the claim link.
| aerodrome |
| Canada |
| — |
| Old cropduster field | aerodrome | Ukraine | — |
| Old Crow Airport | international | Canada | IATA YOC · ICAO CYOC |
| Old Dairy Airport | aerodrome | United States | — |
| Oldeani Airport | aerodrome | Tanzania | — |
| Old Eureka Airport (abandoned) | aerodrome | United States | — |
| Oldfield Aero | aerodrome | Keosauqua, United States | — |
| Old Forge Airport | aerodrome | Old Forge, United States | — |
| Old Forker Ultralight Airport | aerodrome | United States | — |
| Old Fort Farm Airport | aerodrome | United States | — |
| Oldham County Airport | aerodrome | Vega, United States | — |
| Old Harbor Airport | international | United States | IATA OLH |
| Old Hay | aerodrome | United Kingdom | — |
| Old Hickory Airpark | aerodrome | United States | — |
| Old Hoppe Place Airport | aerodrome | United States | — |
| Old Ibadan Airport | aerodrome | Nigeria | — |
| Old Kimberley Airport | aerodrome | Canada | — |
| Old Kingsbury Aerodrome | aerodrome | United States | — |
| Old Lilongwe Airport | aerodrome | Malawi | — |
| Old Meadow Lakes Airport | aerodrome | United States | — |
| Old Meldrum | aerodrome | United Kingdom | — |
| Old Mill Farm Airstrip | private airstrip | United Kingdom | — |
| Old Orchard Airpark | aerodrome | United States | — |
| Old Orchard Airport | aerodrome | United States | — |
| Old Park Farm Airstrip | aerodrome | United Kingdom | — |
| Old Plains Airport | aerodrome | United States | — |
| Old Port Royal Airport | aerodrome | United States | — |
| Old Reb Airport | aerodrome | United States | — |
| Old Rhinebeck Airport | aerodrome | Red Hook, United States | — |
| Olds (AHS) CFU9 | aerodrome | Canada | ICAO CFU9 |
| Old Santa Margarita Ranch Airport | aerodrome | United States | — |
| Old Sarum Airfield | regional | United Kingdom | ICAO EGLS |
| Olds-Didsbury Airport | aerodrome | Canada | — |
| Olds (Netook) Airport CFK6 | aerodrome | Canada | — |
| Old South Aerodrome | aerodrome | United States | — |
| Old Station Airstrip | aerodrome | Australia | — |
| Oldstown Flying Tails Airport | aerodrome | United States | — |
| Old Sturgis Aiport (Historic) | aerodrome | United States | — |
| Old Thedford Airport | aerodrome | United States | — |